F59H-1C Johnson Controls LIQUID LEVEL Control

Overview

The Johnson Controls F59H-1C is a weight-operated liquid level switch designed for the automatic on/off control of electric motors in sump pump and open tank applications. Engineered to start a motor on liquid level rise and stop it on liquid level drop, this heavy-duty switch operates based on the submersion of its dual-weight float mechanism. It features a robust contact block that maintains high contact force up to the break point, providing reliable operational control in commercial, industrial, and mechanical environments.

Features

• Heavy-duty Double-Pole, Single-Throw (DPST) contact configuration.
• Weight-operated system with high contact force for reliable motor triggering.
• Flexible operations factory-set for sumps, with field-reversible adjustment options for open tank filling.
• Durable construction featuring a fixed mounting bracket that can be reversed in the field.
• Integrated conduit wiring design with 7/8-inch conduit openings in the case.
• Designed as an operating control to manage liquid level fluctuations securely.

Specifications

• Brand: Johnson Controls / PENN Controls
• Part Number: F59H-1C
• Contact Action: Double-Pole, Single-Throw (DPST)
• Motor Rating: 1 HP at 120/240 VAC, 1/4 HP at 32 VDC
• Voltage Range: 120/240 VAC
• Mounting Type: Fixed external mounting bracket
• Wiring Interface: Conduit wiring (7/8-inch conduit openings)
• Enclosure Rating: NEMA 1
• Max Liquid Temperature: 150 degrees F (66 degrees C)
• Max Switch Ambient Temperature: 140 degrees F (60 degrees C)
• Cable Length: 16 feet

Applications

The F59H-1C liquid level control is ideal for monitoring and maintaining automated fluid management in sump pits, open tanks, condensate collection networks, boiler rooms, and residential or industrial drainage areas. It effectively operates as a high-performance control switch for commercial HVAC water systems, wastewater basins, and clean indoor mechanical facilities requiring standard NEMA 1 environments.